code: def test_valid_lt():
      # Quantity
      q1 = Quantity(ETH, 5)
      q2 = Quantity(ETH, 50)
      assert (q1 < q2) and not (q2 < q1)
  
      # int
      q1 = Quantity(ETH, 5)
      q2 = 50
      assert (q1 < q2) and not (q2 < q1)
  
      # float
      q1 = Quantity(ETH, 5)
      q2 = 50.0
      assert (q1 < q2) and not (q2 < q1)
  
imports: import pytest
  import unittest.mock
  from tensortrade.oms.instruments import *
  from tensortrade.core.exceptions import *
label_desc: Use image node_id 15 for calling a global function with example usage: test_valid_lt() without return types